<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="name"/>
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="age"/>
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addFn">添加/修改</button>
    </div>
    <div>
      <table
        border="1"
        cellpadding="10"
        cellspacing="0"
      >
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item,index) in list" :key="index">
          <td>{{ item.id }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="delFn(item.id)">删除</button>
            <button @click="editFn(item.id)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data(){
    return{
      name:'',
      age:'',
      sex:'男',
      list:[{id:+new Date,name:'哈哈哈',age:18,sex:'男',}],
      flag:''
    }
  },
  methods:{
    addFn(){
      if(this.flag === ''){
        this.list.push({
        id: +new Date,
        name:this.name,
        age:this.age,
        sex:this.sex
      })
      }else{
        this.flag.name = this.name,
        this.flag.age = this.age,
        this.flag.sex = this.sex
      }
      this.name = ''
      this.age = ''
      this.sex = '男'
      this.flag = ''
    },
    editFn(index){
      // console.log(index);
      // 通过id找到被编辑的元素
      const obj = this.list.find(item => item.id === index)
      this.flag = obj
     this.name = obj.name,
     this.age = obj.age,
     this.sex = obj.sex

    },
    delFn(index){
      this.list = this.list.filter(item => item.id !== index)
    }
  },
}
</script>